Exploring Antibacterial Properties of Marine Sponge-Derived Natural Compounds: A Systematic Review

Area of Science:

• Marine natural products
• Chemical ecology
• Antimicrobial drug discovery

Background:

• Multidrug-resistant (MDR) bacteria pose a significant global health threat, leading to increased morbidity, mortality, and healthcare expenses.
• Natural products, especially from marine organisms like sponges, are a vital source for novel antimicrobial drug development.
• Marine sponges produce diverse secondary metabolites (SM) with potent chemical defense properties, including antibacterial activity.

Purpose of the Study:

• To systematically review recent findings on sponge-derived secondary metabolites with antimicrobial activity.
• To identify compounds effective against Pseudomonas aeruginosa, a critical Gram-negative pathogen.
• To explore the potential of these natural compounds as a basis for new antimicrobial therapies.

Main Methods:

• Systematic literature review of sponge-derived antimicrobial compounds.
• Inclusion criteria focused on compounds with reported Minimum Inhibitory Concentration (MIC) values.
• Analysis of identified secondary metabolites targeting Pseudomonas aeruginosa.

Main Results:

• Identified several classes of sponge-derived secondary metabolites with antimicrobial activity.
• Key compound classes include alkaloids, sesterterpenoids, nitrogenous diterpenes, and bromotyrosine derivatives.
• These compounds demonstrated varying degrees of efficacy against Pseudomonas aeruginosa.

Conclusions:

• Marine sponges are a rich source of novel antimicrobial compounds.
• Sponge-derived metabolites, particularly alkaloids and sesterterpenoids, show significant potential for combating MDR bacteria.
• Structural insights from these compounds can guide the development of next-generation antimicrobial agents.